सोते समय मनुष्य के लाल रक्त कणिकाओं (RBC) की संख्या में लगभग कितने प्रतिशत की कमी आ जाती है?

Which digestive hormone inhibits both gastric secretion and motility, stimulates insulin release, and is secreted mainly when fat is present in the duodenum?

The repeated sequence of gradual onset of apnoea followed by gradual restoration of respiration is called ________.